Biological Classification And System Of Classification Question 8
Question: Nostoc may form
Options:
A) Simple colony
B) Compound colony
C) Both (a) and (b)
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
The cyanobacterium Nostoc can form both simple and compound colonies.
Nostoc initially forms a small, hollow gelatinous globule which grows and becomes leathery, flattened and convoluted, forming a gelatinous mass with other colonies growing nearby.
These colonies can reach several centimeters in diameter.
The colonies consist of mats or gelatinous masses created by aggregated trichomes that can appear in a range of colors (depending on the species) such as brown, yellow, or green.
Therefore, the correct answer is option C: Both (a) and (b). This means that Nostoc may form both simple and compound colonies.
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